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TIL that autopilot was first invented in 1912

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p8Xr8 TIL about the arrow of time paradox. Events at the microscopic level are time-symmetric, meaning that if time were symmetrical, a video of those events would seem realistic whether played forwards or backwards. But this isn't the case at the macroscopic level. There is no good explanation for this.
wXZE TIL that bullet-resistant glass can be designed to work one way and not the other
nAg7 TIL Marie Curie was the first woman to win the Nobel Prize, but also the first person (man or woman) ever to win the award twice and for achievements in two distinct scientific fields; Chemistry and Physics.
grKo8 TIL how a fart can be cut into 12 equal parts
jr7M TIL that, due to the gender imbalance, by the year 2020, 24 million Chinese men will be unable to find a spouse.